Effects of pH Value on Corrosion Behavior of Thermal-Sprayed Al-Si Coated Q235 Steel in Simulated Soil Solutions

Wu, Xiaohu; Xu, Jian; Ke, Wei; Xu, Shugen; Feng, Bing; Hu, Biao

doi:10.1007/s11665-014-0971-2

Cited by 9 publications

(7 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The corrosion rate of the zinc layer is greatly affected by external conditions. In a strongly acidic or alkaline soil environment, the corrosion resistance of galvanized steel is worse than that of copper and carbon steel [ 36 , 37 ]. Due to the skin effect of the zinc layer, the evacuation current flowing through the grounding conductor and the stray current in the soil can eventually cause corrosion of the zinc layer, which greatly accelerates the corrosion rate of the zinc layer [ 22 ].…”

Section: The Formation Mechanism and Influencing Factors Of Soil Corrosionmentioning

confidence: 99%

“…Soil pH value . Soil pH affects the electrode potential of metals by changing the total amount of

in the soil and their activity [ 36 , 37 , 72 ]. The main sources of

in the soil are active

produced by dissolving

in water, organic acids produced by the decomposition of organic matter, and

produced by oxidation of sulfides.…”

Section: The Formation Mechanism and Influencing Factors Of Soil Corrosionmentioning

confidence: 99%

See 1 more Smart Citation

Research Advances of Soil Corrosion of Grounding Grids

Zhang

Liao²,

Xue

et al. 2021

Micromachines

View full text Add to dashboard Cite

A grounding grid plays the role of discharging current and balancing voltage to ensure the safety of the power system. However, soil corrosion can damage the grounding grid, which then can endanger the safe operation of power system. This paper reviewed recent research advances of soil corrosion of grounding grid. The cause, mechanism, types, and influencing factors of soil corrosion of grounding grids were summarized, and the corresponding detection technology and protective measures were also introduced. The paper pointed out that soil corrosion is a serious threat to the grounding grid system. Moreover, the impact mechanism of AC stray current, new corrosion detection technology, and better protective measures still need in-depth research.

show abstract

Section: The Formation Mechanism and Influencing Factors Of Soil Corrosionmentioning

confidence: 99%

“…Soil pH value . Soil pH affects the electrode potential of metals by changing the total amount of

in the soil and their activity [ 36 , 37 , 72 ]. The main sources of

in the soil are active

produced by dissolving

in water, organic acids produced by the decomposition of organic matter, and

produced by oxidation of sulfides.…”

Section: The Formation Mechanism and Influencing Factors Of Soil Corrosionmentioning

confidence: 99%

Research Advances of Soil Corrosion of Grounding Grids

Zhang

Liao²,

Xue

et al. 2021

Micromachines

View full text Add to dashboard Cite

show abstract

“…The potentiodynamic polarization curves were obtained at a constant scan rate of 0.5 mV/s, and corrosion current densities (i corr ) were estimated by Tafel extrapolation. The detailed description about the sweep rate had been given in our previous work (Ref 13). Electrochemical impedance spectra (EIS) measurements were performed with a frequency response analyzer (EG&G 5210) coupled to a potentiostat (EG&G 273A).…”

Section: Electrochemical Testsmentioning

confidence: 99%

Electrochemical Corrosion Behavior of Thermal-Sprayed Stainless Steel-Coated Q235 Steel in Simulated Soil Solutions

Wei

et al. 2016

J. of Materi Eng and Perform

Self Cite

View full text Add to dashboard Cite

The corrosion behavior of a thermal-sprayed stainless steel (SS)-coated Q235 steel has been investigated in simulated soil solutions using electrochemical measurements, x-ray photoelectron spectroscopy analysis, and scanning electron microscope. The as-received Q235 steel and galvanized steel for grounding grids were also examined for the purpose of comparison. The effects of pH value of testing solutions have been examined. The thermal-sprayed SS-coated steel showed the best corrosion resistance among the three kinds of materials. With increasing pH value, the corrosion resistance of SS-coated Q235 steel increased. In weak alkaline solutions, the SS-coated Q235 steel showed the largest polarization resistance (3.2 3 10 5 X cm 2 ), the lowest anodic current density (1.4 3 10 22 lA/cm 2 ), and the largest film resistance (4.5 3 10 6 X cm 2 ), suggesting that the coated steel has the best corrosion resistance in weak alkaline environment. Related corrosion mechanisms are also discussed.

show abstract

“…Even though the system design has been set as reliable as possible, in the grounding process unavoidable disturbances can occur [5], such as the occurrence of insulation leaks in the Grounding system which causes some systems to trip [3]. The amount of corrosiveness (pH and resistivity) has a significant effect in variations in the resistance value in the grounding system, which are induced by chemical and physical changes [6]. Poor power or a decline in the quality of equipment components can lead to noise in instrumentation equipmen [7].…”

Section: Introductionmentioning

confidence: 99%

Earthing Resistance and Poldzolic Soil Resistivity at PT. Perta Samtan Gas Field Extraction Plant Prabumulih

et al. 2022

View full text Add to dashboard Cite

It is important to undertake research at the location of PT. Perta Samtan Gas Field Extraction Plant Prabumulih with Podzolik soil type (yellow gravel clay) and analysis in order to prevent work accidents and the risk of fire caused by leakage current at the gas processing extraction installation. Direct measurement of soil resistance value is used as the basis for the methodology, which is followed by literature study as background information and technical comprehension of experimental research. The outcomes of the research study are then compared using Comsol simulation with the computational method of computational finite element analysis of the resulting resistance. According to the data, the resistivity of the podzolic soil was 214.4 Ωm, while the Comsol simulation yielded a resistance value per meter of 209.1 Ω and 196.7Ω, respectively. The Comsol simulation demonstrates that, in order to obtain a ground resistance value of 1 ohm on a Single rod system with Fe material, it is necessary to optimize the depth of the grounding electrode, which can range from 3 meters to 1053 meters d. In the simulation, the results of soil resistance measurements and the Comsol Multiphysics application are obtained, and the difference is calculated with a percentage error of 1.62%.

show abstract

Effects of pH Value on Corrosion Behavior of Thermal-Sprayed Al-Si Coated Q235 Steel in Simulated Soil Solutions

Cited by 9 publications

References 11 publications

Research Advances of Soil Corrosion of Grounding Grids

Research Advances of Soil Corrosion of Grounding Grids

Electrochemical Corrosion Behavior of Thermal-Sprayed Stainless Steel-Coated Q235 Steel in Simulated Soil Solutions

Earthing Resistance and Poldzolic Soil Resistivity at PT. Perta Samtan Gas Field Extraction Plant Prabumulih

Contact Info

Product

Resources

About